Sinnott-Armstrong, W. (2009). Mackie’s Internalisms. In R. Joyce & S. Kirchin (Eds.), A World Without Values: Essays on John Mackie’s Moral Error Theory (pp. 55–70). Dordrecht: Springer.

Sinnott-Armstrong, W. “Mackie’s Internalisms.” In A World Without Values: Essays on John Mackie’s Moral Error Theory, edited by R. Joyce and S. Kirchin, 55–70. Dordrecht: Springer, 2009.

Sinnott-Armstrong W. Mackie’s Internalisms. In: Joyce R, Kirchin S, editors. A World Without Values: Essays on John Mackie’s Moral Error Theory. Dordrecht: Springer; 2009. p. 55–70.

Sinnott-Armstrong, W. “Mackie’s Internalisms.” A World Without Values: Essays on John Mackie’s Moral Error Theory, edited by R. Joyce and S. Kirchin, Springer, 2009, pp. 55–70.

Sinnott-Armstrong W. Mackie’s Internalisms. In: Joyce R, Kirchin S, editors. A World Without Values: Essays on John Mackie’s Moral Error Theory. Dordrecht: Springer; 2009. p. 55–70.